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Mastering FreeSWITCH

You're reading from  Mastering FreeSWITCH

Product type Book
Published in Jul 2016
Publisher Packt
ISBN-13 9781784398880
Pages 300 pages
Edition 1st Edition
Languages
Concepts
Authors (8):
Russell Treleaven Russell Treleaven
Profile icon Russell Treleaven
Seven Du Seven Du
Profile icon Seven Du
Darren Schreiber Darren Schreiber
Profile icon Darren Schreiber
Ken Rice Ken Rice
Profile icon Ken Rice
Mike Jerris Mike Jerris
Profile icon Mike Jerris
Kalyani Kulkarni Kalyani Kulkarni
Profile icon Kalyani Kulkarni
Florent Krieg Florent Krieg
Profile icon Florent Krieg
Charles Bujold Charles Bujold
Profile icon Charles Bujold
View More author details
Toc

Table of Contents (21) Chapters close

Mastering FreeSWITCH
Credits
About the Authors
About the Reviewers
Contributors
www.PacktPub.com
Preface
1. Typical Voice Uses for FreeSWITCH 2. Deploying FreeSWITCH 3. ITSP and Voice Codecs Optimization 4. VoIP Security 5. Audio File and Streaming Formats, Music on Hold, Recording Calls 6. PSTN and TDM 7. WebRTC and Mod_Verto 8. Audio and Video Conferencing 9. Faxing and T38 10. Advanced IVR with Lua 11. Write Your FreeSWITCH Module in C 12. Tracing and Debugging VoIP 13. Homer, Monitoring and Troubleshooting Your Communication Platform Index

Fail2ban on all services


Fail2ban is a tool designed to monitor systems' log files and to trigger actions in case it detects traces of something suspicious. It is widely considered as an intrusion prevention tool. Many log files from different programs can be monitored at once, meaning that you can monitor as many different services as you want (including FreeSWITCH, of course). Various kinds of reactions can be configured to be triggered.

The configuration of fail2ban relies on three different concepts: Filters, actions and jails. A "filter" is a set of regular expressions used to identify suspicious behaviors in the monitored log file. As log lines are generally specific to each service, you will probably have one filter per service you want to protect (but it is not a rule). Then you have the "action": They describe what to trigger in case a filter matches a line. It can be for instance:

  • Block the attacker IP address in the iptable's firewall (most popular and useful)

  • Send an alarm message...

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